Electric-lamp socket.



E* EGTRIG LAMP MEET.

ABPLIGATIGN Mmm MAY 5,1912

the latch plate 3G projects sufficiently far through the slot of the cam disk 23 to enter a slot 35, (Figs. 1 and 5) of the rotary switch piece 26, so that the latter can turn on the shaft only with the latch plate 3G.

Assuming the parts to be in the positions shown in Figs. l and 2, and the spindle 20 to be turned clockwise, Figs. 2, 3 and 6, the pin 25 on the latch plate 36 will be drawn toward the spindle 20, by the end of the caml slot, until the latch 30 is drawn ra dally inward clear of the inner edge of the bottom lock 3l, which detains it` Meantime the spring 33 will have been tensioned by the movement. of the pin 3ft with the cam disk 28, so that when the latch 30 has been freed from the stop 31, the switch piece will be thrown forward clock-wise, to make a qiiick break of the circuit. The latch will be thrown radially out-ward again at once by this' forward movement, to enter between and come into locking engagement with the neXt pair of stops 3l, 32, the switch being then in the off position. Similarly, if the key be turned contraclockwise, the pin 25 of the` latch plate will be moved radially outward by the end g/ of the cam slot, and the latch 30 will be moved outwardly until its clears the outer edge of the detaining lock 32, when the meantime tensioned spring 33 will throw thel rotary switch piece to the next position, with the latch 30 between the next two adjacent stops 3l, 32.

I claim as my inventionl. A key socket for electric lamps, having an insulating body with'line terminals and lamp terminals and provided with a rotary key spindle, a switch piece rotatably mounted on said spindle, contacts coperating with the' switch piece, a transversely movable latch plate connected to and rotating with the switch piece, a switch operating spring, means to tension said spring onthe rotation of the switch spindle, stops engaged by and serving to temporarily detain said latch plate against rotation in, either direction, and a cam moving with the switch spindle and operatively associated with said latch plate and stops to effect their disengagement upon rotation of the spindle in either direction, substantially as described.

In a switch for vkey sockets for electric lamps, a rotary key spindle, a switch piece rotatably mounted thereon, a latch plate engaging said switch piece to rotate therewith but transversely slidable thereon, stationary stops engaging said latch plate to temporarily detain the same against rotation in either direction, and a rotary cam moving with the key spindle and operatively engaging said latch plate to shift it transversely out of engagement with said stops on the rotation of the spindle in either direction.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses.

ARTHUR W. CLAUDER. 'I

lVitnesses:

G. W. GOODRIDGE, H. M. VICHERT'. 

